Math, asked by aaryapat06, 2 days ago

cot20°cot40° + cot40° cot80° - cot80° cot20° is equal to :

Answers

Answered by karubhaisurela10

0

Answer:

$cot20°cot40° + cot40° cot80° \\ - cot80° cot20° \\ = cot20°cot40°cot80° \\ \times(1 + 1 - 1) \\ = cot20°cot40°cot80°$

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